How can a horizontal component be of sin? Error in book or my brain?

I've learned that the horizontal component is F cos angle not F sin angle, but i'm looking right now into the aqa physics a student book from nelson thrones, chapter 2.3 page 27, and it says that the horizontal components going to be made up of sin and the vertical out of cos... This is about banking of the road and I have a diagram of a F1 racing car on a banked surface, and it says that the normal forces on the tires from the banked surface (N1 and N2) have horizontal components of (N1 + N2) Sin angle and vertical components (N1 + N2) Cos angle but how is that possible :(



Is the mistake in the book or are sin and cos not always vertical and horizontal components respectively?